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3. Conclusion and outlook
As we have just seen, measurement technology based on Bragg gratings has a number of advantages, not least their sensitivity and linearity of response to the parameters required by users (temperature, deformation, pressure, etc.), and the multiplexing possibilities offered by the finesse of the gratings. In addition to the traditional properties provided by optical fibers (electro-magnetic immunity, low weight and small dimensions, resistance to harsh environments, etc.), Bragg grating measurement has the decisive advantage (over other optical methods) of being able to be referenced in an absolute manner, and therefore making it possible to disconnect and reconnect sensors or the measurement system, without requiring recalibration (unlike interferometric measurements, for example) since the spectral measurement is a "signature" independent of intensity fluctuations. The state of the art...
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Conclusion and outlook
Glossary
Bibliography
Quoted projects
European project COSMUS (Real-Time Modelling and Compensation Of Soil Movements on Underground Sites). Ref: BRPR960235; Leader: Solétanche-Bachi [France]. Partners: CEA (France), Glötzl (Germany), EPFL-LC (Switzerland), Tractebel (Belgium) and Cambridge Univ. (England).
Optical Transducer Systems. Danish project funded by the Danish National Advanced Technology Foundation. Partners: Brüel &...
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In the 90s, the players involved in manufacturing technologies and in understanding the physical phenomena underlying photo-inscription were either academics and research centers, large telecoms manufacturers, or small SMEs who had sensed an emerging need. These small private players enabled a large number of users to purchase and test this innovative technology. Then, as is often the case, some SMEs were...
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